# File scripts/parsing-rules.rb, line 199
    def apply(text)
      atts = super(text)
      atts.each do |f,v|
        if subst_rules.has_key?(f)
          old, new = subst_rules[f]
          new_val = v.sub(old, new)
          atts[f] = new_val
        end
      end
      return atts
    end